package PTA01;

import java.util.Scanner;
public class Text05 {
	  public static void main(String[] args) {
	        Scanner in = new Scanner(System.in);
	        while (in.hasNextInt()) {
	        	 int a = in.nextInt();
	             int b = in.nextInt();
	        	if(a>1000||b>1000){
	        		System.out.println("a<=1000");
	        	}
	        	else{
	        		  System.out.println(a + b);
	        	}
	              
	        }
	    }
	
}
